Liquid-fuel burner.



HENRY A.JJAvIs, or KALAnAzoo, MICHIGAN.

LIQUID-FUEL BURNER.

To all whom it may concern:

Be it known that I, HENRY A. DAVIS, a citizen of the United States,residing inthe city aiid county of Kalamazoo, State of Michigan, haveinvented certain new and "useful Improvements in Liquid-Fuel Burners, ofwhichthe following is a specification. Thisinvention relates toimprovements in liquid fuel burners. i

he main object of this invention'is to provide an improved wickless blueflame liquid'fuel burner, applicable to a cooking stove and, one whichis very efiicient in operation and quite compact and simple inconstruc'tion.v I I I Further objects, and-objectsrelating todetails'and economies of construction and operation willdefinitely'appear from the detailed description to follow. y

I accomplish the objects of my invention by the devices andmeans-described in, the following Specification. The invention isclearly defined and pointed out in the claims.

A structure which is a preferred embodi- I mentof my invention isillustrated in the accompanying drawing, forming a part of thisspecification, in whlchz' Figure I is aplan view of my improved liquidfuel burner, showing the same applied to a "cooking stove.

Fig. II is an enlarged .detail Vert1calsec- 'tion through myimprovedburner, showing the arrangement of the various parts and the"connection of the same to the stove, taken on line 2-2 of Figs. I andIII. e

Fig. III is an enlarged detail vertical section, showing further detailsof the various parts taken on the section line 3-3 of Figs. I and II. I

Fig. IV is an enlarged detail horizontal sectional view, showing thearrangement and disposition of the priming. cup ortrough, taken'on linel-41. of Figs. II and III.

In the drawing, similar reference characte'rsireferto similar partsthroughout the severalviews, and the sectional views are takenlooking inthe' direction of the little arrow'sat the ends of the section lines.

Referring to the numbered parts of the drawing, I providea cup-like body'1, a perforated top '2, and a generator 3. The generator 3 is disposedwithin --th e top in a spaced relation to the top and side walls thereofand depends into the body lin a spaced relation "to its walls, theseparts co- Specification of Letters Patent.

Application filed. July 31, 1916. Serial No. 112,321. i

Patented nea, 1917.

acting to provide an annular generating and combustion chamber. The top1 of the generator 3is preferably'conical and is preferably providedwith a central '6, the cup being formed by depressing a portion of thetop, as clearly shown in Fig. II. The perforations 5 of the top 2provide means for delivering air to the annular generating andcombustion chamber space between the generator and'body and top. The

generator is supported by the ribs 8 on the body 1 which are shoulderedto receive it. The top has a central raised portion 7.above thegenerating cup' 6 to. which the delivery coupling 29 is-connected. Afeed valve 30 is arranged between this delivery connection and thesupply pipe .31; I

The top 2 is provided with outwardly projecting flanges 11 at its lowerend which rest -on the edgesof the side wall 10 of the body. Thetop isheld 'in place by the outer casing 12 which surrounds and incloses thefront portion of the burner base and clamps the flange 11 between it andthe edge of the wall 10, asshown. I

The body 1is securedto the top 14: of the stove by means of the ears 13on the body and'the bolts 15. The flange 11 of the top is clampedbetween the top of the stove and thesee'ars 13. I

The stove top is recessed to receive a part of the burner body, as shownin Fig. I, and is provided with an extension 16 having ears 17 to whichthe ears 18 on the casing 12 are secured by the bolts 19. Y

The priming cup member 20 is secured to the bottom of the body so thatits cup 26 is "below the slot-like delivery opening 27 of the body, thecup beingtrough-shaped, as best shown in'Fig. IV. This priming cupmember is secured to the body 1 by meansof the screws 21.] The primingcup member has an extension 23 which coacts with an extension 24cprojecting through the casing to provide an auxiliary air inlet passage25. At its 'inner end "the vpriming cup member has a'slot-like dischargeopening 22 delivering below the bottom of the body.

The body 1 casing member 12'and extension 16 of the stove form adischarge passage 28 delivering to the fire-pot. This firep'ot isprovided with the usual discharge flue 32 which is of importance in thatit insures the proper down draft of the flame.

With the parts thus arranged, the operation is as follows: The valve 30is opened generating cup until a sufficient quantity of liquid fuel isdelivered to fill the priming cup 26. The valve is then closed and thefuel in the priming cup ignited, preferably by the aid of a littlealcohol which can be introduced through the passage 25 or through theperforations in the top. The burning of the fuel in this priming cupheats the burner to such an extent that when fuel is again turned on itis vaporized and may be ignited. The draft carries the flame downwardunder the generator and through the discharges 27 and 22 into thepassage 28 and into the fire-pot of the stove. When the burner is wellstarted the fuel is vaporized in the generating cup 6 and is evenpartially vaporized before it reaches this cup owing to the connection29' becoming more or less heated. It is mixed with air as it passes downover the generator and burns in the annular combustion chamber formed bythe generator and the body and top members, as described, and as itpasses below the generator to the discharge opening 27 and through thedischarge passage 22 into the passage 28. The auxiliary air admitted at25 insures a very perfect and efiicient combustion.

I contemplate that in certain circumstances air may, with advantage, besupplied at 25 under pressure securing a blow pipe action.

My improved burner is very eflicient and fuel is consumed withpractically no deposit.

I have not attempted to illustrate or describe certain modifications instructural details which I contemplate or which might be necessary ordesirable to embody my improvements in particular embodiments, as Ibelieve the disclosure made will enable those skilled in the art towhich my invention relates to embody or adapt the same as conditions mayrequire.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is;

1. In a liquid fuel burner, the combination with a stove comprising afire-pot provided with a discharge flue, of a cup-like body having anelongated discharge opening in its bottom, a foraminated top, agenerator having a centrally disposed generating cup in its top disposedwithin said'top in a spaced relation thereto and depending within saidbody in a spaced relation to its walls, means for feeding fuel to saidgenerating cup, a priming member mounted below said body member andhaving a troughlike priming cup disposed below said discharge of saidbody, there being an auxiliary air inlet at the outer end of saidpriming cup member and a slot-like discharge at its inner end below saidbody, and a casing embracing said priming cup member and the frontportion of said body and spaced from the bottom thereof and coactingtherewith to provide a discharge passage delivering to said fire-pot,the said auxiliary air inlet opening being at the outside of the casing.

2. In a liquid fuel burner, the combina tion with a stove comprising afire-pot provided with a discharge flue, of a body having a dischargeopening in its bottom, a foraminated top, a generator disposed withinsaid top in a spaced relation thereto and depending within said body ina spaced relation to its walls, means for feeding fuel to saidgenerator, a priming member mounted below said body member and having apriming cup disposed below said discharge of said body, there being anauxiliary air inlet at the outer end of said priming cup member and adischarge at its inner end below said body, and a casing memberembracing said priming cup and the front portion of said body and spacedfrom the bottom thereof and coacting therewith to provide a dischargepassage delivering to said fire-pot, the said auxiliary air inletopening being at the outside of the casing.

3. In a liquid fuel burner, the combination of a cup-like body having anelongated discharge opening in its bottom, a foraminated top, agenerator having a centrally disposed generating cup in its top disposedwithin said top in a spaced relation thereto and depending within saidbody in a spaced relation to its walls, means for feeding fuel to saidgenerating cup, and a priming cup member disposed below said body andhaving a trough-like priming cup disposed below said discharge of saidbody, there being an auxiliary air inlet at the outer end of saidpriming cup member and a slot-like discharge at its inner end below saidbody.

4. In a liquid fuel burner, the combination of a body having a dischargeopening in its bottom, a foraminated top, a generator disposed withinsaid top member in a spaced relation thereto and depending within saidbody in a spaced relation to its walls, means for feeding fuel to saidgenerator, and a priming cup member disposed below said body and havinga priming cup disposed below said discharge of said body, there being anauxiliary air inlet at the outer end of said priming cup member and adischarge at its inner end below said body.

5'. In a liquid fuel burner, the combina tion of a body having adischarge opening in its bottom, a foraminated top, a generator disposedwithin said top in a spaced relation thereto and depending within saidbody in a spaced relation to its walls, means for feeding fuel to saidgenerator, and a priming cup disposed below said discharge of said body.

6. In a liquid fuel burner, the combination of a body having a dischargeopening in its bottom, a foraminated top, a generator disposedwithinsaid top in a spaced re- In Witness whereof, I have hereunto set lationthereto and depending Within said my hand and seal in the presence oftwo 10 :lgodyfinda spafced relation to its Walls, means witnesses. I

or ee in uel to said generator, and a member di sposed below thedischarge of HENRY DAVIS said body and having an auxiliary air inletWitnesses:

at its outer end and a discharge at its inner LUELLA G. GREENFIELD,

end below said body. GRACE B. THOMPSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

. I Washington, D. 0."

